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10-17-2013, 04:44 AM
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#1 |
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Registered User
 
Join Date: Sep 2013
Location: iredell county, nc
Posts: 77
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Eaton EO72
Any knowledge about this rear end would be helpful.
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Real trucks have a clutch. Please inform automakers.  1972 GMC, K25, 383 stroker, SM465, NP205, Eaton HO-72 |
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10-17-2013, 05:14 AM
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#2 |
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Registered User
Join Date: Apr 2000
Location: new mexico
Posts: 948
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Re: Eaton EO72
I've had this truck since 2008 and use it as a work truck. I've had no trouble with the eaton rear end and it has been used hard. I hear they are hard to find parts for, but fortunately I have had zero trouble with mine.
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1972 3/4T 4x4 Chevrolet (383) 1971 c-10 SWB (400 sb) 1972 4x4 Blazer 1969 SWB 4x4 GMC Projects: 1972 stepside 4x4 http://67-72chevytrucks.com/vboard/s...d.php?t=280132 http://67-72chevytrucks.com/vboard/s...d.php?t=285952 http://67-72chevytrucks.com/vboard/s...d.php?t=553672 http://67-72chevytrucks.com/vboard/s...d.php?t=522704 |
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10-17-2013, 10:07 AM
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#3 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
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Re: Eaton EO72
^^^ There's your standard classic reply to that question.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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10-17-2013, 11:49 AM
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#4 | |
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Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: Eaton EO72
Quote:
Thirty bucks from: http://www.themotorbookstore.com/st1...FYw1QgodPl0ALg Well worth the price. |
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10-17-2013, 01:36 PM
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#5 |
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Registered User
Join Date: Sep 2013
Location: iredell county, nc
Posts: 77
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Re: Eaton EO72
Thanks for the replies. I am looking at a K20 with one on it and quite honestly have never worked with one.
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Real trucks have a clutch. Please inform automakers. 1972 GMC, K25, 383 stroker, SM465, NP205, Eaton HO-72 |
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10-17-2013, 01:44 PM
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#6 |
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Registered User
Join Date: Sep 2009
Location: Prescott Valley AZ
Posts: 345
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Re: Eaton EO72
I just took one apart. They are brutal. Iv'e had low mileage 14 bolts fall apart. If you keep oil in it, it will most likely last forever. The pinion bearing is huge.
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10-17-2013, 01:50 PM
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#7 |
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Registered User
Join Date: Sep 2013
Location: iredell county, nc
Posts: 77
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Re: Eaton EO72
Thanks, that is good to know. Does anyone make a posi or locker for this axle? I do not know of any.
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Real trucks have a clutch. Please inform automakers. 1972 GMC, K25, 383 stroker, SM465, NP205, Eaton HO-72 |
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10-17-2013, 01:53 PM
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#8 |
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Registered User
Join Date: Sep 2009
Location: Prescott Valley AZ
Posts: 345
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Re: Eaton EO72
Yes, the Eaton No Spin. Iv'e seen a a couple on Ebay, kinda pricey. Real simple set up though.
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10-17-2013, 04:46 PM
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#9 |
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Registered User
Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
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Re: Eaton EO72
I have an Eaton with around 400K on the clock. It isn't noisy. I keep the oil changed in it I want to say I put in LT7 or JL7?? brand oil....It is what my uncle used for the semi's he drove. It has been loaded down heavy, driven fast and pulled TONS. Now the bad news...The breaks are so so on it because the parts are pricey. Look HERE for some additional information on the Eatons.
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 |
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10-17-2013, 04:50 PM
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#10 | |
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Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: Eaton EO72
Quote:
My 68 C20 has the Eaton HO72 in it with 437,000 miles on it. Still going strong.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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10-17-2013, 04:57 PM
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#11 | |
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Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: Eaton EO72
Quote:
Be careful, that drop out pumpkin weighs a lot. Much more than the 9" pumpkins I have pulled many times. Probably 100 pounds+. Better off pulling the tin cover off the back of the axle housing and just removing the carrier & ring gear assembly leaving the drop out pumpkin & pinion gear in place.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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10-19-2013, 02:39 AM
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#12 |
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Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: Eaton EO72
Use the search function and type in Eaton rear, or HO72, or HO52
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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10-19-2013, 06:40 AM
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#13 |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Eaton EO72
The guys on Pirate 4x4 are wild about them. They're tough units, so much so that even those maniacs over there don't bust them.
Heck, there's guys over there converting them to front axles. Think about the logistics of that swap, cutting the axle tubes off and splicing on tubes with steering knuckles, then figuring out the bearings, seals, and drive shafts for each side. |
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10-19-2013, 07:34 AM
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#14 | |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,723
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Re: Eaton EO72
Quote:
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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10-19-2013, 08:40 AM
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#15 |
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One of the First
Join Date: Jan 2000
Location: St. Augustine,FL.
Posts: 4,054
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Re: Eaton EO72
I had a complete rebuild on mine a few years ago. New locker and axles. The shop upgraded the axles to fit the locker. So, they can be rebuilt.
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DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie) |
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10-19-2013, 12:06 PM
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#16 |
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Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: Eaton EO72
Now that i have some time on my hands, here are some threads i searched up and subscribed too.
http://67-72chevytrucks.com/vboard/s...d.php?t=200268 http://67-72chevytrucks.com/vboard/s...d.php?t=401974 http://67-72chevytrucks.com/vboard/s...d.php?t=183452 http://67-72chevytrucks.com/vboard/s...d.php?t=172827 http://67-72chevytrucks.com/vboard/s...d.php?t=177514 http://67-72chevytrucks.com/vboard/s...d.php?t=391609 http://67-72chevytrucks.com/vboard/s...d.php?t=236743
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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